Revolving fire-arm



W. H. BLISS.

REVOLVING FIRE ARM.

No; 318,048. Patented Mar. 3, 1885 WITNESSES. INVENTOR a a/4% W y g tainnew and useful Improvements in Revolving Fire-Arms, which improvementsare fully UNITED STAT S PATENT OFFICE.

WILLIAM H. BLISS, OF NCPJVICH, CONNECTICUT,

REVOLVING FIRE-ARM.

ELECIFIGAEION forming part of Letters Patent No. 313,0t8, dated March 3,1885.

Application filed February 14, 18"4. (No model l T 0 aZZ whom it mayconcern;

Be it known that 1, WILLIAM H. BLIss, of the city of Norwich, county ofNew London, and State of Connecticut, have invented cerset forth anddescribed in the following specification, reference being had to theaccompanying drawings, in which Figure 1 is a side view of a revolvercontaining my improvements, a portion of the frame being cut away toexpose the working parts. In Fig. 2are shown side and top views of thecylinder-bolt detached. Fig. 3 is a detached view of said bolt and ahammer as commonly constructed.

, My improvements relate, principally, to the bolt which stops andretains the cylinder of double-acting or self-cocking arms in po sition,so that the cartridge to be fired is in longitudinal alignment with thebarrel proper, it being my purpose to provide a more simple and lessexpensive cylinder-bolt than is now commonly used.

My invention consists, briefly, of so constructing the forward part ofthe sear that it may act as a cylinder-bolt, thus dispensing with thecost and trouble of fitting an extra bolt, and reducing the number ofworking parts in the arm. In other words, I provide a single rocking ortilting piece with a hook on the rear end to engage the hammer-notches,and an upward extension on the forward end of the same piece, forming anose to enter the cylinder slots. To accomplish this I am obliged tomake my combined sear and bolt of peculiar shape, as hereinafterdescribed, so that the trigger and its connecting parts (hand,lifting-dog, 8:0.) may have room to act freely.

I have also changed and improved that portion of the hammer whichengages the new form of sear and bolt above referred to.

In the drawings herewith submitted,A represents the frame of an armhaving hung in their respective places the hammer B and trigger C. Saidtrigger is of the usual form, and is pivoted in the frame just forwardof the opening through which the nose of the bolt passes upward toengage the cylindernotch, and has pivoted to its rear side a hand orpawl to revolve the cylinder, and alift ing-pawl, which, acting on thenotched front side of the hammer, cocks said hammer when the trigger isforced or drawn rearward.

My combined bolt and sear is shown at a, it being pivoted to the backside of the frame by a short screw, b. (See Fig. 2, also dotted circlein Fig. 1.) This piece a, as before stated, has a rocking motion on saidscrew; but being acted on by a spring, as at c, the tendency is to throwthe bolt end down and the sear end up into engagement with thehammer-notches.

\Vhen my new form of bolt is to be used with the common form ofhammer-that is to say, with ahammer having notches formed as a solidpart of said hammer, as in Fig. 3-I

leave that part of the hammer against which the sear rests (when thehammer is down) somewhat fuller than usual, so that a considerablemovement of the sear may be obtained as it drops off into the half-cocknotch to throw the bolt-nose out of the cylinder, so that said cylindermay be rotated to load or to discharge empty shells. As the hammercontinues to move upward the sear rides on its lower side until it dropsinto the full-cock notch, which, being of much less depth than thehalf-cock notch, allows the bolt-nose to enter the cylinder-slot farenough to keep the cylinder from turning. Now, as the trigger is pulledfarthcr rearward its top side engages the under side of the bolt end,and, throwing it upward, releases the hammer, and at the same timeforces the bolt up into the cylinder-notch. As the rear side of thetrigger must pass upward by the sear, I cutaway the central portion ofsaid sear, as shown in the several figures.

In Fig. 1 I have hung in the lower side of the hammer what I call asafety-latch, d, on which the notches which are to engage the sear areformed. This safety-latch is pivoted in the hammer, as at 6, its rear orfree end bein g forced downward by a spring, 43, said spring being ofsufficient strength to overcome the spring 0.

I have found in operating this new form of bolt an occasional tendencyto jam against the periphery of the cylinder when said cylinder was notrota-ted far enough to allow the bolt to drop into the slot. I11 suchacase the trigger could not be forced rearward far enough to throw outthe scar and release the hammer; so I prefer to use a hammercontainingasafetylatch, although by carefully fitting and adjusting theseveral parts a solid hammer may be used satisfactorily.

Having thus described my invention, I claim 1. In combination with thehammer and trigger, a suitably-pivoted tilting piece having formed onits rear end a hook or sear to engage the hammer-notches, and on itsforward end an upward extension to engage the cylinder-slots to retainthe cylinder in a given position, said tilting piece being cut away nearits central portion, and so located relative to the trigger that saidtrigger as it trips the sear shall also force the bolt end upward intothe cylinder-slot, as and for the purpose specified.

2. In combination with thetrigger and sear of a revolving arm, a hammerhaving pivoted in its lower portion, a spring-pressed fly or lever, asat (1, having formed on its outer side 20 half and full cock notches,and adapted to yield under proper pressure from the sear, all of saidparts (trigger, scar, and hammer) being so formed and pivoted in theframe of vthe .arm that they may operate substantially 2 5 as and forthe purpose specified.

' WILLIAM H. Buss.-

VVitnesses:

FRANK H. ALLEN, A. H. CONVERSE.

